[gtk/emoji-insert-fix] textview: Make insert-emoji replace the selection

[Matthias Clasen <matthiasc src gnome org>]

commit 348a38a8769dacf88e4f69e07fbe37e4ddfd6732
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Aug 2 20:48:14 2020 -0400

    textview: Make insert-emoji replace the selection
    
    This is the expected behavior, and matches what
    GtkText does.
    
    Fixes: #2996

 gtk/gtktextview.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtktextview.c b/gtk/gtktextview.c
index c0e2749d4f..5aef271df6 100644
--- a/gtk/gtktextview.c
+++ b/gtk/gtktextview.c
@@ -9616,6 +9616,21 @@ gtk_text_view_get_monospace (GtkTextView *text_view)
   return gtk_widget_has_css_class (GTK_WIDGET (text_view), GTK_STYLE_CLASS_MONOSPACE);
 }
 
+static void
+emoji_picked (GtkEmojiChooser *chooser,
+              const char      *text,
+              GtkTextView     *self)
+{
+  GtkTextBuffer *buffer;
+
+  buffer = get_buffer (self);
+
+  gtk_text_buffer_begin_user_action (buffer);
+  gtk_text_buffer_delete_selection (buffer, TRUE, TRUE);
+  gtk_text_buffer_insert_at_cursor (buffer, text, -1);
+  gtk_text_buffer_end_user_action (buffer);
+}
+
 static void
 gtk_text_view_insert_emoji (GtkTextView *text_view)
 {
@@ -9634,8 +9649,7 @@ gtk_text_view_insert_emoji (GtkTextView *text_view)
       g_object_set_data (G_OBJECT (text_view), "gtk-emoji-chooser", chooser);
 
       gtk_widget_set_parent (chooser, GTK_WIDGET (text_view));
-      g_signal_connect_swapped (chooser, "emoji-picked",
-                                G_CALLBACK (gtk_text_view_insert_at_cursor), text_view);
+      g_signal_connect (chooser, "emoji-picked", G_CALLBACK (emoji_picked), text_view);
     }
 
   buffer = get_buffer (text_view);